Facebook’s like button seems like second nature to people who use the site regularly, and it’s the most popular click on the site.

On an average day, 26 percent of Facebook’s members indicate that they like someone else’s content, according to the latest Pew Internet and American Life report. (Yes, we covered it two days ago, focusing on politics and friendships.)

The next most popular activity is commenting on someone else’s post or status, which 22 percent of Facebook users do on an average day.

Also on the average day:

  • 15 percent of Facebook users update their own status.
  • 20 percent comment on another user’s photos.
  • 10 percent send another user a private message.